JP4626449B2 - Packing method of optical film superimposed body - Google Patents

Description

  The present invention relates to a packaging body and a packaging method for an optical film superimposed body. Specifically, the present invention relates to a simple packaging body and packaging method of an optical film superposed body.

  An optical film such as a polarizing film, a polarizing separation film, and a retardation film, or an optical film obtained by laminating them is useful as one of optical components constituting a liquid crystal display device, and has a shape that matches the screen of the liquid crystal display device. It is used as a rectangular optical film.

  Such an optical film (1) is usually provided with an adhesive layer (2) on one or both sides in order to simplify the process of attaching to a liquid crystal display device, while no adhesive layer is provided. The surface is often provided with a protective film (3) for the purpose of protecting the optical film surface. In addition, on the adhesive layer (2), a release film (4) is adhered for the purpose of preventing foreign matters such as dust from adhering or optical films from adhering to each other, and an optical film having an adhesive layer ( 5) (FIG. 1). The release film is removed and discarded just before being attached to the liquid crystal display device.

The optical film (5) having such an adhesive layer is stacked to form an optical film superimposed body (6) (FIG. 2), and further wrapped in a packaging material to form a package of optical film superimposed body, In many cases, the products are packed and shipped in a container such as cardboard. As the packaging material, a normal packaging film such as a polyolefin film such as a polyethylene film or a polypropylene film, a polyester film, or a polyamide film is used.
The optical film superposed body is not curved, and the optical film surface is laid horizontally in a horizontal direction so that it can be placed well (see, for example, Patent Document 1 and Patent Document 2).

At this time, in the case of an optical film having a diagonal of 10 inches or less, in order to increase transport efficiency, 100 or more sheets are often stacked. In particular, 200 or more optical films having a diagonal of 5 inches or less are stacked, and 300 or more optical films having a diagonal of 3 inches or less are often stacked. In these cases, the height of the optical film superimposed body (6) is often larger than each side of the optical film (1). In many cases, such an optical film superimposed body package is not put in a container in a stacked state, but is placed sideways in a container while maintaining the shape of the superimposed body so as to be easily installed.
However, the optical film superimposed body with a diagonal of 10 inches or less is difficult to wrap because it shakes when wrapping or shifts between the optical films, and when the wrapping body is packed in a container. However, there is a problem that it takes time and effort to prepare buffer materials of various sizes and arrange them between the package and the package, and between the package and the container.
Japanese Patent Laid-Open No. 10-175664 JP 2000-191994

  Provided is a method for packing an optical film superimposed body that is simple and has a diagonal size of 10 inches or less without deterioration of the quality of the optical film due to rubbing during transportation.

The present invention is arranged in a container with an optical film surface vertical without wrapping an optical film superposed body in which a plurality of optical films having a diagonal of 10 inches or less are stacked, and (1) an optical film of the optical film superposed body Between both end surfaces on the surface side and the container, and (2) between the surface perpendicular to the optical film surface of the optical film superposed body and the container or between the optical film surface and the surface perpendicular to the optical film superposed body, A cushioning material having a thickness of 80 to 100% of each interval is disposed.
In addition, one row of the optical film superimposed body is disposed in the container, a buffer material is disposed between the both end surfaces of the optical film superimposed body on the optical film surface side and the container, and is perpendicular to the optical film surface of the optical film superimposed body. One cushioning material is disposed between each of the directional surfaces and the horizontal and vertical containers.
Furthermore, a plurality of rows of optical film superimposed bodies are arranged in a container, and a buffer material is disposed between both ends of the optical film superimposed body on the optical film plane side and the container, and (1) optical properties of the optical film superimposed body Between the plane perpendicular to the film plane and its horizontal container or between the planes perpendicular to each other of the optical film stacks; and (2) the plane perpendicular to the optical film plane of the optical film stack and its vertical. The method for packing an optical film superposed body according to claim 1, wherein one cushioning material is disposed between each container in the direction.

  According to the present invention, without wrapping the optical film superposed body, it is simply put in a container, and the buffer material to be used is simple and, of course, the optical film superposition without deteriorating the quality of the optical film during transportation. A body packaging is provided.

  Examples of the optical film applied to the present invention include a polarizing film, a polarizing separation film, and a retardation film. Moreover, these laminated bodies may be sufficient. The optical film (1) is usually provided with an adhesive layer (2) on one or both sides in order to simplify the attachment process to the liquid crystal display device. On the other hand, the surface on which the adhesive layer is not provided is provided with a protective film (3) for the purpose of protecting the optical film surface. On the adhesive layer (2), a release film (4) is adhered for the purpose of preventing foreign matters such as dust from adhering to each other and rectangular optical films from adhering to each other, and an optical film having an adhesive layer ( 5) (FIG. 1). The release film is removed and discarded just before being attached to the liquid crystal display device.

As the polarizing film, a film obtained by laminating both surfaces of a polarizer film made of polyvinyl alcohol (PVA) dyed with iodine or a dichroic dye with a film made of triacetyl cellulose (TAC) is used. The thickness of the polarizer film is usually about 15 to 30 μm, and the thickness of the TAC film is usually about 40 to 200 μm. The polarizer film and the TAC film are usually bonded with a polyvinyl alcohol adhesive or the like.
As the retardation film, for example, a uniaxially oriented film obtained by stretching a polycarbonate resin film or the like is used, and its thickness is usually about 30 to 100 μm.
In addition, a film having directionality such as a light control film having a property of scattering incident light from a specific angle and transmitting incident light from other angles as it is. As such a light control film, “Lumisty (registered trademark)” manufactured by Sumitomo Chemical Co., Ltd. is exemplified.
Furthermore, the optical film may be a laminated film of a light control film, a polarizing plate, and a retardation plate. The shape of such an optical film is often processed into a rectangle having a size corresponding to the screen size of the target liquid crystal display device.

  The polarizing film is a film having a function of transmitting light parallel to the transmission axis direction and absorbing light parallel to the absorption axis direction orthogonal to the transmission axis, and is also referred to as an absorption polarizing film. Usually, it consists of a polarizer and a protective film laminated on both sides thereof. The polarizer is a film obtained by uniaxially stretching, dyeing with a dichroic dye, and boric acid treatment on a polyvinyl alcohol film having a film thickness of 10 μm to 150 μm. As the protective film, a cellulose acetate-based resin film, for example, a triacetyl cellulose film is usually used. For example, “Sumikaran (registered trademark) SRW862A” (manufactured by Sumitomo Chemical Co., Ltd.) can be mentioned.

  The polarization separation film is a film having a function of transmitting light parallel to the transmission axis direction and reflecting light parallel to the reflection axis direction orthogonal to the transmission axis, and is a reflective polarizing film, a non-absorbing polarizing film, or Since the reflected light is reused and the brightness is improved, it is also referred to as a brightness enhancement film. Polyester, particularly polyethylene naphthalate or a copolymer mainly composed of polyethylene naphthalate units, has been used as a raw material, and has excellent performance. For example, it is commercially available under the trade name “DBEF” (manufactured by Sumitomo 3M Limited). ing.

  The retardation film is a film imparted with retardation (retardation) by stretching a resin film. For example, a polycarbonate resin, a polysulfone resin, a polyethersulfone resin, a polyarylate resin, a cycloolefin resin, Norbornene resins are mainly used. A well-known method can be employ | adopted for extending | stretching, and longitudinal extending | stretching like extending | stretching between rolls and transverse extending | stretching like tenter extending | stretching are used abundantly. Further, the stretching direction may be uniaxial stretching, but there are also those that have been oriented in the thickness direction for adjusting the viewing angle when used in a liquid crystal display device. The retardation value of the retardation film is appropriately determined in accordance with desired characteristics, but generally, a retardation film in the range of 100 to 1,000 nm is often used. Moreover, it is one of the preferable forms to use a quarter wavelength film or a half wavelength film. For example, “Sumikalite (registered trademark) SEF440138” (manufactured by Sumitomo Chemical Co., Ltd.), which is a uniaxially stretched retardation film made of polycarbonate and having a thickness of 40 μm, can be mentioned.

  The adhesive constituting the adhesive layer (2) is not particularly limited as long as it is transparent and optically isotropic, and a pressure-sensitive adhesive (adhesive) is usually used. As the pressure sensitive adhesive, an acrylic pressure sensitive adhesive, a urethane pressure sensitive adhesive, or the like is used. The thickness of the adhesive layer is approximately 10 μm to 50 μm.

  As a peeling film, a polyethylene film, a polyethylene terephthalate (PET) film, etc. are used normally, and the thickness is 20-40 micrometers normally. Such a release film may be provided with releasability, for example, by treating the surface thereof with a silane coupling agent or the like.

  An optical film superposition body (6) is formed by stacking a plurality of optical films (5) (FIG. 2). The number of stacked optical film superposed bodies (6) is not particularly limited, but is appropriately selected in consideration of size, weight, etc. to the extent that handling of the obtained superposed body is not difficult, for example, about 20 to 500 sheets, Usually, they are stacked so that the height is about 5 to 200 mm. In the case of an optical film having a diagonal of 10 inches or less, in order to increase the transportation efficiency, 100 or more sheets are often stacked. In particular, 200 or more rectangular optical films having a diagonal of 5 inches or less are often stacked, and 300 or more rectangular optical films having a diagonal of 3 inches or less are often stacked. In these cases, the height c of the optical film superimposed body is larger than the sides a and b of the optical film (a <c, b <c). Such an optical film superposed body is not put into a container in a stacked state, but is usually put down into a container while keeping the shape of the superposed body so that it can be placed.

  The container in which the optical film superimposed body is placed is not particularly limited, and is made of plastic such as polyethylene terephthalate (PET), polystyrene (PSt), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), and has an appropriate strength. Commercially available containers can be used. A transparent container is preferable because the contents can be confirmed, and antistatic treatment can prevent contamination of environmental foreign matter such as dust.

  The cushioning material to be used is not particularly limited, and a foamed plastic sheet such as foamed polystyrene, foamed polyethylene, and foamed urethane, or an air mat in which bubbles are confined have suitable flexibility and are preferable at a low price. In addition, a buffer material can be used by piled up several buffer material sheets so that it may become appropriate thickness. At this time, it is preferable to use the cushioning material in a bag so that the handling material is convenient and, since the cushioning material often generates chips from the cut surface, in order to prevent contamination into the container. Bags for bagging are not particularly limited, and polyolefins such as linear low density polyethylene (LLDPE), polyethylene (PE), polypropylene (PP), nylon (NY), polyvinyl chloride (PVC), polyethylene terephthalate. A commercially available plastic film bag made of polyester such as (PET) is used. In addition, it is preferable to perform antistatic treatment because it can prevent environmental foreign matter such as dust from entering.

  An optical film superposition body (6) may arrange | position a partition plate in the surrounding 6 surfaces. A partition plate is arrange | positioned in order to arrange | position as a partition plate when putting multiple rows | lines of an optical film superimposition body in a container, or to prevent a damage to an optical film superposition body. Because the partition plate is in direct contact with the optical film, it is made of polyethylene terephthalate (PET), polystyrene (PSt), polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), expanded polystyrene, expanded polyethylene, expanded urethane, etc. A plastic sheet having moderate flexibility is preferably used. Therefore, in this invention, when arrange | positioning a partition plate, the thickness is added as buffer material thickness.

  In the present invention, an optical film superposed body in which a plurality of optical films having a diagonal of 10 inches or less are stacked is placed in a container with the optical film surface vertical without wrapping, and (1) an optical film of the optical film superposed body Between both end surfaces on the surface side and the container, and (2) between the surface perpendicular to the optical film surface of the optical film superposed body and the container or between the optical film surface and the surface perpendicular to the optical film superposed body, A buffer material having a thickness of 80 to 100% of each interval is disposed.

FIG. 3 shows a schematic diagram of one embodiment of the present invention. (A) is a schematic plan view, and (B) is a schematic side view.
Without wrapping one row of the optical film superposed body (6), the optical film surface is vertical, and one side of the optical film surface perpendicular to the optical film surface is brought to one side so as to come into contact with the container (7). Has been placed. A cushioning material (9) is disposed between both ends of the optical film superimposed body on the optical film surface side and the container, that is, between both sides of the side c in the arrow direction and the container. Further, between the surface of the optical film superimposed body perpendicular to the optical film surface and the container, that is, between the optical film superimposed body and the container in the arrow direction of side a and between the optical film superimposed body and the container in the arrow direction of side b. One cushioning material is arranged in each. In addition, the partition plate is arrange | positioned at six surfaces around the optical film superimposing body.
The container placed in this way is covered with an upper lid to form the final package. The upper lid is fixed by a normal method such as tape bonding or binding with a string.

In this embodiment, the optical film superimposed body is arranged so as to be moved to one side, but the optical film superimposed body may be disposed at the center of the container, and a cushioning material may be disposed between the six surrounding surfaces and the container. . Between both end faces of the optical film superposed body on the optical film surface side and the container, a cushioning material must be disposed. However, for the surface orthogonal to the optical film surface, one of the horizontal direction and the vertical direction respectively. It is preferable that the cushioning material is disposed only between the surface and the container, which is preferable because it is simplified accordingly.
The space between the optical film superimposed body and the container in the vertical direction of the surface orthogonal to the optical film surface, that is, the arrow direction of side b, may be above or below the container, that is, above or below the optical film superimposed body.

  As the cushioning material, a material having a thickness of about 80 to 100%, preferably about 90 to 98% of the interval between the places to be arranged is used. If the thickness is less than about 80%, the optical film superimposed body collapses during transportation, and the optical films are rubbed and damaged. If the thickness is more than about 100%, the optical film may be scratched or deformed. This is not preferable.

  It is not preferable to directly stack two or more rows of optical film superimposing bodies on the top and bottom because the optical film may be damaged by a load. When two or more rows are stacked, it is necessary to take measures such as a structure in which the partition plate disposed between the optical film superimposed bodies is supported in the container, and this structure is substantially formed by stacking two containers. It doesn't change with things.

FIG. 4 shows a schematic diagram of another embodiment of the present invention. (A) is a schematic plan view, and (B) is a schematic side view.
Two rows of optical film superimposing bodies (6) are not wrapped and are arranged side by side in the container (7) with the optical film surface vertical. About two rows of optical film superposition bodies, the buffer material (9) is arrange | positioned between the both ends of the optical film surface side and a container, ie, the both sides of the arrow direction of edge | side c, and a container, respectively. Further, the optical film in the direction perpendicular to the optical film surface of the optical film superimposing body on the side not in contact with the container and the container, that is, the optical film superimposing body in the arrow direction of side a and the optical in the arrow direction of side b. One cushioning material is disposed between the film superposed body and the container. In addition, the partition plate is arrange | positioned at six surfaces around the optical film superimposing body.

FIG. 5 shows a schematic diagram of another embodiment of the present invention. (A) is a schematic plan view, and (B) is a schematic side view.
Two rows of optical film superimposing bodies (6) are arranged without being wrapped, and are arranged in the container (7) so that the optical film surface is vertical and are brought close to one side of the container. About two rows of optical film superposition bodies, the buffer material (9) is arrange | positioned between the both ends of the optical film surface side and a container, ie, the both sides of the arrow direction of edge | side c, and a container, respectively. Further, there is one cushioning material between the optical film superimposed bodies between the optical film superimposed bodies, ie, between the optical film superimposed bodies in the arrow direction of side a and between the optical film superimposed body in the arrow direction of side b and the container. Has been placed. In addition, the partition plate is arrange | positioned at six surfaces around the optical film superimposing body.

Further, when three or more rows of optical film superimposed bodies are arranged in a container, they are packed in the same manner as in the case of arranging the two rows.
The thickness of the cushioning material in the case where a plurality of rows of optical film superimposed bodies are arranged in the container is the same as that described in the embodiment shown in FIG.
By the above packing method, it is possible to easily obtain a packaging body of an optical film superimposed body in which the quality of the optical film is not deteriorated due to rubbing during transportation without packaging the optical film superimposed body.

Hereinafter, the present invention will be specifically described by way of examples, but the present invention is not limited to the examples.
The following film and container were used.
(1) Optical film: Polarizing film, Sumikaran (registered trademark) SRW862AP7-S / 3 (manufactured by Sumitomo Chemical Co., Ltd.), thickness 311 μm
(2) Container: Polystyrene container, PCT-A (manufactured by Central Hariki Seisakusho), thickness 2 mm
(3) Sheet for cushioning material: soft foamed polyethylene sheet, Miramat (manufactured by Niizumi Polytech), thickness 3, 5, 8 mm
(4) Bag for cushioning material: polyethylene film (manufactured by Niizumi Polytech Co., Ltd.), thickness 50 μm
(5) Partition plate: rigid foamed polyethylene sheet, Sun Pearl (manufactured by Fujita Sangyo), thickness 1 mm

Example 1
As shown below, the optical film superposed body was packed in a container as shown in FIG.
As the optical film superimposed body, one optical film was prepared by cutting the above optical film into 55 mm × 38 mm (diagonal of 2.6 inches) and stacking 500 sheets. The height was 156 mm. The respective lengths are a = 55 mm, b = 38 mm, and c = 156 mm.
The above container was prepared as a container. The respective internal dimensions are vertical A = 110 mm, depth B = 65 mm, and horizontal C = 190 mm.
Subsequently, 6 sheets of the above-mentioned soft foamed polyethylene sheet having a thickness of 8 mm were stacked and wrapped in a polyethylene film bag to prepare a buffer material having a thickness of 48 mm.
The optical film superposed body was placed close to one side of the container. A buffer material having a thickness of 48 mm was disposed between the optical film superimposed body in the arrow direction of side a and the container. In addition, said partition plate was arrange | positioned on the surface which contact | connects a superimposition body. The thickness of the cushioning material (including the partition plate) is 91% {[(48 + 1 × 2) / (110−55)] × 100 = 91} of the distance between the superimposed body and the container.
Subsequently, three sheets of 5 mm thickness are stacked, wrapped with polyethylene film to prepare two cushioning materials of 15 mm thickness, and both end surfaces on the optical film surface side of the optical film superimposed body in the arrow direction of side c It placed between the containers. In addition, said partition plate was arrange | positioned on the surface which contact | connects a superimposition body. The thickness of the cushioning material (including the partition plate) is 94% {[((15 × 2 + 1 × 2) / (190-156)] × 100 = 94} of the distance between the superimposed body and the container.
Furthermore, three sheets of 8 mm thick were stacked and wrapped with polyethylene film to prepare a buffer material with a thickness of 24 mm, and placed on the upper side of the optical film superimposed body in the arrow direction of side b. In addition, said partition plate was arrange | positioned on the surface which touches a superimposition body. The thickness of the cushioning material (including the partition plate) is 96% {[(24 + 1 × 2) / (65-38)] × 100 = 96} of the distance between the superimposed body and the container.
The container was covered with an upper lid and fixed with an adhesive tape. This container was put in a cardboard box, placed on a truck, and a transportation test was conducted. After transporting about 1700 km, the contents were confirmed. As a result, there was no particular abnormality in the appearance of the optical film, and the quality before the transportation test could be maintained. The results are summarized in Table 1.

Example 2
As shown in FIG. 4, the optical film superposed body was packed in a container as shown in FIG.
As an optical film superimposing body, the above optical film was cut into 24 mm × 38 mm (diagonal 1.8 inches), and 500 rows were prepared in two rows. The height was 156 mm. The respective lengths are a = 25 mm, b = 38 mm, and c = 156 mm.
The same container as in Example 1 was prepared.
Subsequently, 3 sheets of the above-mentioned soft foamed polyethylene sheet having a thickness of 8 mm and 6 sheets of the above-mentioned soft foamed polyethylene sheet having a thickness of 5 mm are stacked and wrapped in a polyethylene film bag to prepare a buffer material having a thickness of 54 mm. did.
Two rows of optical film superimposed bodies were arranged close to one side of the container. A buffer material having a thickness of 54 mm was disposed between the optical film superimposed body in the arrow direction of side a and the container. In addition, said partition plate was arrange | positioned on the surface which contact | connects a superimposition body. The thickness of the cushioning material (including the partition plate) is 95% {[(54 + 1 × 3) / (110-25 × 2)] × 100 = 91} of the distance between the superimposed body and the container.
Subsequently, the same as that used in Example 1 between the both end surfaces of the optical film superposed body in the arrow direction of side c and the container, and the upper side of the optical film superposed body in the arrow direction of side b. The buffer material was arranged in the same manner as in Example 1.
The container was covered with an upper lid and fixed with an adhesive tape. As in Example 1, this container was placed in a cardboard box, placed on a truck, and a transportation test was performed. After transporting about 1700 km, the contents were confirmed. As a result, there was no particular abnormality in the appearance of the optical film, and the quality before the transport test could be maintained. The results are summarized in Table 1.

Example 3
As shown in FIG. 5, the optical film superimposed body was put in a container and packed as shown in FIG.
The same optical film superposed body, container, and buffer material as those in Example 2 were prepared.
Two rows of optical film superposed bodies were arranged close to both sides of the container.
A buffer material having a thickness of 54 mm was disposed between the optical film superimposed body and the optical film superimposed body in the arrow direction of side a. A buffer material was disposed between the other optical film superimposed body and the container in the same manner as in Example 2. A partition plate was disposed on the surface in contact with the optical film superimposed body.
The container was covered with an upper lid and fixed with an adhesive tape. As in Example 1, this container was placed in a cardboard box, placed on a truck, and a transportation test was performed. After transporting about 1700 km, the contents were confirmed. As a result, there was no particular abnormality in the appearance of the optical film, and the quality before the transport test could be maintained. The results are summarized in Table 1.

Comparative Example 1
Instead of the 48mm-thick cushioning material placed between the optical film superimposed body in the direction of the arrow of side a and the container, four 5mm-thick sheets are stacked and wrapped with polyethylene film to prepare a 20mm-thick cushioning material The optical film superposed body was packed in the same manner as in Example 1 except that the optical film superposed body was disposed.
The thickness of this cushioning material (including the partition plate) is 40% {[(20 + 1 × 2) / (110−55)] × 100 = 40} of the distance between the superimposed body and the container.
A transportation test was conducted in the same manner as in Example 1. When the contents of the container were confirmed after the test, the optical film was not properly stacked, and the shape as a superimposed body could not be maintained. Also, scratches were observed on the optical film surface. The results are summarized in Table 1.

Comparative Example 2
Instead of the 24 mm thick cushioning material arranged on the upper side of the optical film superimposed body in the direction of the arrow of side b, six sheets of 8 mm thick are stacked and wrapped with polyethylene film to prepare a 48 mm thick cushioning material. The optical film superposed body was packed in the same manner as in Example 1 except for the arrangement.
The thickness of the buffer material (including the partition plate) is 185% {[(48 + 1 × 2) / (65-38)] × 100 = 185} of the interval between the superposed body and the container.
A transportation test was conducted in the same manner as in Example 1. When the contents of the container were confirmed after the test, the optical film maintained its shape as a superimposed body, but was deformed as if the end face of the optical film was crushed. The results are summarized in Table 1.

Comparative Example 3
6 sheets of 5 mm thick sheets are stacked in place of the two 15 mm thick cushioning materials arranged between the two end faces of the optical film superimposing body in the direction of the arrow c on the side c and the container. One buffer material with a thickness of 30 mm wrapped in a film bag was prepared, and the same procedure as in Example 1 was performed except that the optical film superimposed body and the buffer material were arranged as shown in FIG. The thickness of the cushioning material (including the partition plate) in the arrow direction of side c is 94% {[(30 + 1 × 2) / (190-156)] × 100 = 94} of the distance between the superposed body and the container. .
A transportation test was conducted in the same manner as in Example 1. After the test, when the contents of the container are confirmed, the optical film superimposed body collapses and the shape thereof cannot be maintained, and a part of the optical film superimposed optical film on the side where the cushioning material in the arrow direction of side c is not disposed. However, it has shifted | deviated between the shock absorbing material and the container which were arrange | positioned in the arrow direction of the edge | side a. The results are summarized in Table 1.

It is a schematic diagram of the optical film which has an contact bonding layer. It is a schematic diagram of an optical film superposition body. It is a schematic diagram which shows the embodiment of this invention, (A) is a plane schematic diagram, (B) is a side surface schematic diagram. It is a schematic diagram which shows the other embodiment of this invention, (A) is a plane schematic diagram, (B) is a side surface schematic diagram. It is a schematic diagram which shows the other embodiment of this invention, (A) is a plane schematic diagram, (B) is a side surface schematic diagram. It is a schematic diagram which shows arrangement | positioning of the optical film superposition body and buffer material in the comparative example 3, (A) is a plane schematic diagram, (B) is a side surface schematic diagram.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optical film 2 Adhesive layer 3 Protective film 4 Release film 5 Optical film 6 which has an adhesive layer Optical film superposition body 7 Container 8 Partition plate 9 Buffer material a One side of an optical film b One side of an optical film c The height of an optical film superposition body A A Side of the container B Height of the container C One side of the container

Claims (6)

  Without wrapping an optical film superposed body in which a plurality of optical films having a diagonal size of 10 inches or less are stacked, the optical film surface is placed in a container vertically, and (1) both ends of the optical film superposed body on the optical film surface side Between the surface and the container, and (2) between the surface perpendicular to the optical film surface of the optical film superposed body and the surface between the container or between the optical film surfaces of the optical film superposed bodies and the surface perpendicular to the optical film surface. A packing method for an optical film superimposed body, wherein a buffer material having a thickness of 80 to 100% is disposed.   A row of optical film superimposed bodies is disposed in the container, a buffer material is disposed between both ends of the optical film superimposed body on the optical film surface side and the container, and the optical film superimposed body is perpendicular to the optical film surface of the optical film superimposed body. The method for packing an optical film superposed body according to claim 1, wherein one cushioning material is disposed between the surface and the horizontal and vertical containers.   A plurality of rows of optical film superimposed bodies are arranged side by side in a container, and a buffer material is disposed between both ends of the optical film superimposed body on the optical film plane side and the container. (1) Optical film surface of the optical film superimposed body Between the plane perpendicular to the horizontal plane and the horizontal container or between the planes perpendicular to each other of the optical film stacks, and (2) the plane perpendicular to the optical film plane of the optical film stack and its vertical direction The method for packing an optical film superposed body according to claim 1, wherein one cushioning material is disposed between each container.   4. The method for packing an optical film superposed body according to any one of claims 1 to 3, wherein partition plates are arranged on six surfaces around the optical film superposed body.   The method for packing an optical film superposed body according to any one of claims 1 to 3, wherein the optical film is at least one film selected from the group consisting of a polarizing film, a polarizing separation film, and a retardation film. The method for packing an optical film superposed body according to any one of claims 1 to 3, wherein the optical film is a laminate of at least two kinds of films selected from the group consisting of a polarizing film, a polarizing separation film and a retardation film.

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